Table 5.

National Sanitation Foundation water quality index of the Chamo Lake.

Sample	Season	Temp	pH	Turbidity	Nitrate	Phosphates	Total solids	DO	BOD5	Total coliform	Total WQI
Wi	0.10	0.11	0.08	0.1	0.1	0.07	0.17	0.11	0.16
CH-01	Dry	Qi	18.5	47	49.2	93.5	50.8	20	31.256	2	39.2
		WQI	1.85	5.17	3.936	9.35	5.08	1.4	5.3135	0.22	6.272	38.59
	Wet	Qi	18.84	51	21	93.8	76.6	20	85.60	7	32.4
		WQI	1.884	5.61	1.68	9.38	7.66	1.4	14.55	0.77	5.184	48.12
CH-02	Dry	Qi	18.3	42.4	58.4	96.65	46.6	20	55	2	40.84
		WQI	1.83	4.664	4.672	9.665	4.66	1.4	9.35	0.22	6.534	42.99
	Wet	Qi	18.8	48	23.4	95.3	81.4	20	85	5	39.28
		WQI	1.88	5.28	1.872	9.53	8.14	1.4	14.45	0.55	6.285	49.38
CH-03	Dry	Qi	17.52	42.4	61.8	95.4	41.2	20	68.86	2	42.28
		WQI	1.752	4.664	4.94	9.54	4.12	1.4	11.71	0.22	6.76	45.11
	Wet	Qi	19.4	48	36.6	95.5	82	20	85.2	2	35.2
		WQI	1.94	5.28	2.93	9.55	8.2	1.4	14.48	0.22	5.63	49.63
CH-04	Dry	Qi	17.52	42.4	59.2	96.2	45.4	20	64	2	40.12
		WQI	1.752	4.66	4.74	9.62	4.54	1.4	10.88	0.22	6.42	44.23
	Wet	Qi	18.8	48	31.8	95.5	81.4	20	85	5	34
		WQI	1.88	5.28	2.54	9.55	8.14	1.4	14.45	0.55	5.44	49.23
CH-05	Dry	Qi	17.52	39.6	60	96.3	38.8	20	65.5	2	40.88
		WQI	1.752	4.356	4.8	9.63	3.88	1.4	11.14	0.22	6.54	43.71
	Wet	Qi	29.8	48	29.8	95.25	79.6	20	84.34	2	33.87
		WQI	2.384	5.28	2.384	9.525	7.96	1.4	14.34	0.22	5.42	48.42